Exodus 28:4

28:4 Now these are the garments that they are to make: a breastpiece, an ephod, a robe, a fitted tunic, a turban, and a sash. They are to make holy garments for your brother Aaron and for his sons, that they may minister as my priests.

Exodus 28:28

28:28 They are to tie the breastpiece by its rings to the rings of the ephod by blue cord, so that it may be above the waistband of the ephod, and so that the breastpiece will not be loose from the ephod.

Exodus 39:22

The Other Garments

39:22 He made the robe of the ephod completely blue, the work of a weaver.

Leviticus 8:7

8:7 Then he put the tunic on Aaron, wrapped the sash around him, and clothed him with the robe. Next he put the ephod on him and placed on him the decorated band of the ephod, and fastened the ephod closely to him with the band.